Evaluation of carbon monoxide oxidation over CeO2/Co3O4 catalysts: Effect of ceria loading
作者： Chih-Wei Tang , Ming-Chih Kuo , Chin-Jung Lin , Chen-Bin Wang , Shu-Hua Chien
DOI: 10.1016/J.CATTOD.2007.10.026
关键词:
摘要: Abstract Modification of cobaltic oxide (obtained from the reduction high-valence cobalt and assigned as R230, S BET = 100 m 2 g −1 ) with different loading ceria was proceeded using impregnation method (assigned Ce X /R230, = 4, 12, 20, 35 50 wt%). The /R230 catalysts were characterized by X-ray diffraction (XRD), nitrogen adsorption at −196 °C, temperature-programmed (TPR) transmission electron microscopy (TEM). Their catalytic activities towards CO oxidation studied in a continuous flow micro-reactor. results revealed that optimal modification, i.e., Ce20/R230, can increase surface area ( = 109 m oxide, further weaken bond strength Co O lower activation among due to combined effect ceria. Ce20/R230 catalyst exhibited best activity T 50 (temperature for 50% conversion) 88 °C.
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